Open AccessEmulation of dual-conjugate adaptive optics on an 8-m class telescope
Author(s) -
Per Knutsson,
Mette Owner-Petersen
Publication year - 2003
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.11.002231
Subject(s) - adaptive optics , optics , telescope , physics , emulation , deformable mirror , conjugate , aperture (computer memory) , mathematical analysis , mathematics , acoustics , economics , economic growth
In this article we present a downscaled laboratory setup emulating five natural guide stars, a layered static atmosphere and a 7.5-m aperture telescope equipped with dual-conjugate adaptive optics at a wavelength of 2.2 microm. Three reconstruction alternatives were evaluated; conventional adaptive optics, field-averaged conventional adaptive optics and dual-conjugate adaptive optics. The results were compared with Zemaxsimulations of the setup. The expected increase of the size of the isoplanatic patch, using dual-conjugate adaptive optics, was confirmed.